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Custódio-Silva AC, Beserra-Filho JIA, Soares-Silva B, Maria-Macêdo A, Silva-Martins S, Silva SP, Santos JR, Silva RH, Ribeiro DA, Ribeiro AM. Purple Carrot Extract Exhibits a Neuroprotective Profile in th e Nigrostriatal Pathway in the Reserpine-induced Model of Parkinson 's Disease. Cent Nerv Syst Agents Med Chem 2024; 24:196-205. [PMID: 38279716 DOI: 10.2174/0118715249260445231226112021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2023] [Revised: 11/01/2023] [Accepted: 11/14/2023] [Indexed: 01/28/2024]
Abstract
BACKGROUND Parkinson's disease (PD) is a chronic neurodegenerative disorder characterized by the progressive loss of dopaminergic neurons in the nigrostriatal pathway. Even with scientific and technological advances, the therapeutic approaches used for the treatment of PD have shown to be largely ineffective in controlling the progression of symptoms in the long term. There is a growing demand for the development of novel therapeutic strategies for PD treatment. Different herbs and supplements have been considered as adjuvant to treat the symptoms of Parkinsonism. The carrot is one of the most consumed vegetable species worldwide, and its root is known for its content of anthocyanins, which possess antioxidant and antiinflammatory properties. This study evaluated the neuroprotective effect of purple carrot extract (CAR) in rats on the reserpine (RES)-induced progressive parkinsonism model. METHODS Male rats (6-month-old) received orally the CAR (400 mg/kg) or vehicle and subcutaneously RES (0.01 mg/kg) or vehicle for 28 days (Preventive Phase). From the 29th day, rats received CAR or vehicle daily and RES (0.1 mg/kg) or vehicle every other day (for 23 days, Protective phase). Behavioral tests were conducted throughout the treatment. Upon completion, the animals' brain were processed for tyrosine hydroxylase (TH) immunohistochemical assessment. RESULTS Our results showed that the chronic treatment of CAR protected against motor disabilities, reducing the time of catalepsy behavior and decreasing the frequency of oral movements, possibly by preserving TH levels in the Ventral Tegmental Area (VTA) and SNpc. CONCLUSION CAR extract is effective to attenuate motor symptoms in rats associated with increased TH+ levels in the Ventral Tegmental Area (VTA) and SNpc, indicating the potential nutraceutical benefits of CAR extract in a progressive parkinsonism model induced by RES.
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Affiliation(s)
| | | | - Beatriz Soares-Silva
- Department of Biosciences, Universidade Federal de São Paulo, Santos, SP, Brazil
| | - Amanda Maria-Macêdo
- Department of Biosciences, Universidade Federal de São Paulo, Santos, SP, Brazil
| | | | - Sara Pereira Silva
- Department of Biosciences, Universidade Federal de São Paulo, Santos, SP, Brazil
| | - José Ronaldo Santos
- Department of Biosciences, Universidade Federal of Sergipe, Itabaiana, SE, Brazil
| | - Regina Helena Silva
- Department of Pharmacology, Universidade Federal of São Paulo, São Paulo, SP, Brazil
| | - Daniel Araki Ribeiro
- Department of Biosciences, Universidade Federal de São Paulo, Santos, SP, Brazil
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2
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Couteau C, Diarra H, Lecoq M, Ali A, Bernet &, Coiffard L. The Role of Essential Oils in Homemade Cosmetics: A Study of 140 Recipes. THE JOURNAL OF CLINICAL AND AESTHETIC DERMATOLOGY 2023; 16:18-24. [PMID: 36743973 PMCID: PMC9891214] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Two recent trends that have developed simultaneously are a mistrust of health products by some of the population and the growing popularity of essential oils. The objective of this study was to analyze recipes with essential oils found on the internet and to assess their level of photoprotective efficacy. Therefore, we conducted a study of 140 recipes for personal care and hygiene products that incorporate one or more essential oils. This analysis revealed that numerous essential oils are called for in these recipes, derived from plants belonging to a wide diversity of botanical families. There was a significant difference (p=0.0026) in the number of essential oils listed in the recipes for facial care and body care recipes. There was also a statistically significant difference (p=2.54E-5) in the amount of essential oil to be added, expressed in drops, according to the type of product being made. A common characteristic of most of the recipes was the absence of any antimicrobial agents or antioxidants, which poses serious issues of preservation for the finished products. Recipes with essential oils pose many issues. The first issue lies in the quantities of the different raw materials to be incorporated; it influences the final essential oil concentration. The second issue concerns the adverse effects (photosensitization, for example) and contraindications (pregnant women, nursing women) of certain essential oils. Finally, it is not possible to carry out physicochemical testing raw materials and finish preparation.
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Affiliation(s)
- Céline Couteau
- All authors are with the University of Nantes, Faculty of Pharmacy in Nantes, France
| | - Harona Diarra
- All authors are with the University of Nantes, Faculty of Pharmacy in Nantes, France
- Mr. Diarra is with University of Paris-Saclay, Faculty of Pharamacy in Châtenay-Malabry, France
| | - Manon Lecoq
- All authors are with the University of Nantes, Faculty of Pharmacy in Nantes, France
| | - Aline Ali
- All authors are with the University of Nantes, Faculty of Pharmacy in Nantes, France
| | - >Mélanie Bernet
- All authors are with the University of Nantes, Faculty of Pharmacy in Nantes, France
| | - Laurence Coiffard
- All authors are with the University of Nantes, Faculty of Pharmacy in Nantes, France
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3
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Shariati A, Didehdar M, Razavi S, Heidary M, Soroush F, Chegini Z. Natural Compounds: A Hopeful Promise as an Antibiofilm Agent Against Candida Species. Front Pharmacol 2022; 13:917787. [PMID: 35899117 PMCID: PMC9309813 DOI: 10.3389/fphar.2022.917787] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2022] [Accepted: 05/30/2022] [Indexed: 11/13/2022] Open
Abstract
The biofilm communities of Candida are resistant to various antifungal treatments. The ability of Candida to form biofilms on abiotic and biotic surfaces is considered one of the most important virulence factors of these fungi. Extracellular DNA and exopolysaccharides can lower the antifungal penetration to the deeper layers of the biofilms, which is a serious concern supported by the emergence of azole-resistant isolates and Candida strains with decreased antifungal susceptibility. Since the biofilms’ resistance to common antifungal drugs has become more widespread in recent years, more investigations should be performed to develop novel, inexpensive, non-toxic, and effective treatment approaches for controlling biofilm-associated infections. Scientists have used various natural compounds for inhibiting and degrading Candida biofilms. Curcumin, cinnamaldehyde, eugenol, carvacrol, thymol, terpinen-4-ol, linalool, geraniol, cineole, saponin, camphor, borneol, camphene, carnosol, citronellol, coumarin, epigallocatechin gallate, eucalyptol, limonene, menthol, piperine, saponin, α-terpineol, β–pinene, and citral are the major natural compounds that have been used widely for the inhibition and destruction of Candida biofilms. These compounds suppress not only fungal adhesion and biofilm formation but also destroy mature biofilm communities of Candida. Additionally, these natural compounds interact with various cellular processes of Candida, such as ABC-transported mediated drug transport, cell cycle progression, mitochondrial activity, and ergosterol, chitin, and glucan biosynthesis. The use of various drug delivery platforms can enhance the antibiofilm efficacy of natural compounds. Therefore, these drug delivery platforms should be considered as potential candidates for coating catheters and other medical material surfaces. A future goal will be to develop natural compounds as antibiofilm agents that can be used to treat infections by multi-drug-resistant Candida biofilms. Since exact interactions of natural compounds and biofilm structures have not been elucidated, further in vitro toxicology and animal experiments are required. In this article, we have discussed various aspects of natural compound usage for inhibition and destruction of Candida biofilms, along with the methods and procedures that have been used for improving the efficacy of these compounds.
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Affiliation(s)
- Aref Shariati
- Molecular and Medicine Research Center, Khomein University of Medical Sciences, Khomein, Iran
- *Correspondence: Aref Shariati, ; Zahra Chegini,
| | - Mojtaba Didehdar
- Department of Medical Parasitology and Mycology, Arak University of Medical Sciences, Arak, Iran
| | - Shabnam Razavi
- Microbial Biotechnology Research Center, Iran University of Medical Sciences, Tehran, Iran
- Department of Microbiology, School of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Mohsen Heidary
- Department of Laboratory Sciences, School of Paramedical Sciences, Sabzevar University of Medical Sciences, Sabzevar, Iran
- Cellular and Molecular Research Center, Sabzevar University of Medical Sciences, Sabzevar, Iran
| | - Fatemeh Soroush
- Molecular and Medicine Research Center, Khomein University of Medical Sciences, Khomein, Iran
- Student Research Committee, Khomein University of Medical Sciences, Khomein, Iran
| | - Zahra Chegini
- Department of Microbiology, School of Medicine, Hamadan University of Medical Sciences, Hamadan, Iran
- *Correspondence: Aref Shariati, ; Zahra Chegini,
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4
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Zuzarte M, Salgueiro L. Essential Oils in Respiratory Mycosis: A Review. Molecules 2022; 27:molecules27134140. [PMID: 35807386 PMCID: PMC9268412 DOI: 10.3390/molecules27134140] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2022] [Revised: 06/24/2022] [Accepted: 06/25/2022] [Indexed: 01/08/2023] Open
Abstract
Respiratory mycosis is a major health concern, due to the expanding population of immunosuppressed and immunocompromised patients and the increasing resistance to conventional antifungals and their undesired side-effects, thus justifying the development of new therapeutic strategies. Plant metabolites, namely essential oils, represent promising preventive/therapeutic strategies due to their widely reported antifungal potential. However, regarding fungal infections of the respiratory tract, information is disperse and no updated compilation on current knowledge is available. Therefore, the present review aims to gather and systematize relevant information on the antifungal effects of several essential oils and volatile compounds against the main type of respiratory mycosis that impact health care systems. Particular attention is paid to Aspergillus fumigatus, the main pathogen involved in aspergillosis, Candida auris, currently emerging as a major pathogen in certain parts of the world, and Cryptococcus neoformans, one of the main pathogens involved in pulmonary cryptococcosis. Furthermore, the main mechanisms of action underlying essential oils’ antifungal effects and current limitations in clinical translation are presented. Overall, essential oils rich in phenolic compounds seem to be very effective but clinical translation requires more comprehensive in vivo studies and human trials to assess the efficacy and tolerability of these compounds in respiratory mycosis.
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Affiliation(s)
- Mónica Zuzarte
- Faculty of Medicine, Coimbra Institute for Clinical and Biomedical Research (iCBR), University of Coimbra, 3000-548 Coimbra, Portugal
- Center for Innovative Biomedicine and Biotechnology (CIBB), University of Coimbra, 3000-548 Coimbra, Portugal
- Clinical Academic Centre of Coimbra (CACC), 3000-548 Coimbra, Portugal
- Correspondence:
| | - Lígia Salgueiro
- Faculty of Pharmacy, University of Coimbra, 3000-548 Coimbra, Portugal;
- Faculty of Sciences and Technology, Department of Chemical Engineering, Chemical Process Engineering and Forest Products Research Centre (CIEPQPF), University of Coimbra, 3030-790 Coimbra, Portugal
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5
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Swathi Krishna S, Thennavan A, Kanthlal SK. Dietary foods containing nitric oxide donors can be early curators of SARS-CoV-2 infection: A possible role in the immune system. J Food Biochem 2021; 46:e13884. [PMID: 34374096 PMCID: PMC8420599 DOI: 10.1111/jfbc.13884] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2021] [Revised: 07/09/2021] [Accepted: 07/15/2021] [Indexed: 12/13/2022]
Abstract
Severe acute respiratory syndrome coronavirus 2 (SARS CoV-2) is a lethal virus that causes COVID-19 (Coronavirus disease 2019), the respiratory illness that has caused the COVID-19 pandemic. Even though multiple pharmacological trials are ongoing, there is no proof that any treatment will effectively cure or prevent COVID-19. Currently, COVID-19-infected patients are being managed with non-specific medications to suppress the symptoms and other associated co-morbidities. Nitric oxide is a bio-signaling molecule that has been shown to be effective for treating several viral infections in humans. Household Natural foods rich in nitrites and nitrates (NO donors) have been scientifically proven to have therapeutic benefits against immune-related respiratory tract infections. It was understood that NO could inhibit the early stage of SARS CoV-2 invasion into the human cell. Fruits and vegetables containing nitrites and nitrates have been revised and are now thought to be potential anti-CoV agents for effective control of other associated systemic disorders. The purpose of this review is to highlight some key facts about the treatment and prevention of COVID-19 infection with foods rich in nitric oxide and its donors. PRACTICAL APPLICATIONS: Improving the body's immune system is the early step to be considered as a preventive measure to stop the spreading of COVID-19 infection. Emerging research continues to mount that dietary nitrates/nitrites from plant foods are being healthy as well as keep us away from infectious diseases. They are now incorporated into low-risk adjuvant therapy for various infections and systemic disorders. This concept portrays the regular consuming foods such as fruits and vegetables that are rich in nitric oxide which have the potential to promote health, improve general well-being, and reduce the risk associated with the highly contagious diseases. Hence, we recommend adding nitrates and nitrites-containing food to the regular diet to improve the self-immunity as well as to fight against COVID-19 disease.
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Affiliation(s)
- S Swathi Krishna
- Department of Pharmacology, Amrita School of Pharmacy, Amrita Vishwa Vidyapeetham, AIMS Health Science Campus, Kochi, Kerala, 682041, India
| | - Arumugam Thennavan
- Central Lab Animal Facility, Amrita Vishwa Vidyapeetham, AIMS Health Science Campus, Kochi, Kerala, 682041, India
| | - S K Kanthlal
- Department of Pharmacology, Amrita School of Pharmacy, Amrita Vishwa Vidyapeetham, AIMS Health Science Campus, Kochi, Kerala, 682041, India
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6
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Zuzarte M, Correia PMP, Alves-Silva JM, Gonçalves MJ, Cavaleiro C, Cruz T, Salgueiro L. Antifungal and Anti-Inflammatory Potential of Bupleurum rigidum subsp. paniculatum (Brot.) H.Wolff Essential Oil. Antibiotics (Basel) 2021; 10:592. [PMID: 34067555 PMCID: PMC8156192 DOI: 10.3390/antibiotics10050592] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2021] [Revised: 05/06/2021] [Accepted: 05/07/2021] [Indexed: 01/09/2023] Open
Abstract
Fungal infections remain a major health concern with aromatic plants and their metabolites standing out as promising antifungal agents. The present study aims to assess, for the first time, the antifungal and anti-inflammatory potential of Bupleurum subsp. paniculatum (Brot.) H.Wolff essential oil from Portugal. The oil obtained by hydrodistillation and characterized by GC-MS, showed high amounts of monoterpene hydrocarbons, namely α-pinene (29.0-36.0%), β-pinene (26.1-30.7%) and limonene (10.5-13.5%). The antifungal potential was assessed, according to CLSI guidelines, against several clinical and collection strains. The essential oil showed a broad fungicidal effect being more potent against Cryptococcus neoformans and dermatophytes. Moreover, a significant germ tube inhibition was observed in Candida albicans as well as a disruption of mature biofilms, thus pointing out an effect of the oil against relevant virulent factors. Furthermore, fungal ultrastructural modifications were detected through transmission electron microscopy, highlighting the nefarious effect of the oil. Of relevance, the oil also evidenced anti-inflammatory activity through nitric oxide inhibition in macrophages activated with lipopolysaccharide. In addition, the essential oil's bioactive concentrations did not present toxicity towards macrophages. Overall, the present study confirmed the bioactive potential of B. rigidum subsp. paniculatum essential oil, thus paving the way for the development of effective drugs presenting concomitantly antifungal and anti-inflammatory properties.
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Affiliation(s)
- Mónica Zuzarte
- Faculty of Medicine, Coimbra Institute for Clinical and Biomedical Research (iCBR), University of Coimbra, 3000-548 Coimbra, Portugal;
- Center for Innovative Biomedicine and Biotechnology (CIBB), University of Coimbra, 3000-548 Coimbra, Portugal
- Clinical Academic Centre of Coimbra (CACC), 3000-548 Coimbra, Portugal
| | - Pedro M. P. Correia
- Faculty of Sciences, BioISI—Biosystems & Integrative Sciences Institute, University of Lisboa, 1749-016 Lisboa, Portugal;
| | - Jorge M. Alves-Silva
- Faculty of Medicine, Coimbra Institute for Clinical and Biomedical Research (iCBR), University of Coimbra, 3000-548 Coimbra, Portugal;
- Center for Innovative Biomedicine and Biotechnology (CIBB), University of Coimbra, 3000-548 Coimbra, Portugal
- Clinical Academic Centre of Coimbra (CACC), 3000-548 Coimbra, Portugal
- Faculty of Pharmacy, University of Coimbra, 3000-548 Coimbra, Portugal; (M.J.G.); (C.C.); (T.C.); (L.S.)
| | - Maria J. Gonçalves
- Faculty of Pharmacy, University of Coimbra, 3000-548 Coimbra, Portugal; (M.J.G.); (C.C.); (T.C.); (L.S.)
- Chemical Process Engineering and Forest Products Research Centre (CIEPQPF), Department of Chemical Engineering, University of Coimbra, 3030-790 Coimbra, Portugal
| | - Carlos Cavaleiro
- Faculty of Pharmacy, University of Coimbra, 3000-548 Coimbra, Portugal; (M.J.G.); (C.C.); (T.C.); (L.S.)
- Chemical Process Engineering and Forest Products Research Centre (CIEPQPF), Department of Chemical Engineering, University of Coimbra, 3030-790 Coimbra, Portugal
| | - Teresa Cruz
- Faculty of Pharmacy, University of Coimbra, 3000-548 Coimbra, Portugal; (M.J.G.); (C.C.); (T.C.); (L.S.)
- Centre for Neuroscience and Cell Biology (CNC), 3000-548 Coimbra, Portugal
| | - Lígia Salgueiro
- Faculty of Pharmacy, University of Coimbra, 3000-548 Coimbra, Portugal; (M.J.G.); (C.C.); (T.C.); (L.S.)
- Chemical Process Engineering and Forest Products Research Centre (CIEPQPF), Department of Chemical Engineering, University of Coimbra, 3030-790 Coimbra, Portugal
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7
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Antifungal and anti-inflammatory potential of the endangered aromatic plant Thymus albicans. Sci Rep 2020; 10:18859. [PMID: 33139758 PMCID: PMC7608662 DOI: 10.1038/s41598-020-75244-w] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2020] [Accepted: 09/06/2020] [Indexed: 11/08/2022] Open
Abstract
Thymus albicans is an endemic species of the Iberian Peninsula with a vulnerable conservation status. In an attempt to contribute to the valorization of this species, the present study brings new insights on the antifungal and anti-inflammatory mechanism of action of T. albicans essential oil. The antifungal activity of the oil and its major compounds was assessed for the first time against standard and clinically isolated strains of yeasts and filamentous fungi. The effect on the two major virulence factors of Candida albicans (germ tube formation and biofilm disruption) was considered in more detail. At 0.08 μL/mL, the oil inhibited C. albicans germ tube formation by more than 40% and decreased biofilm biomass at MIC values, thus pointing out its antivirulent potential. The anti-inflammatory activity of the essential oil was investigated on LPS-stimulated mouse macrophages (RAW 264.7) by evaluating the levels of several pro-inflammatory mediators, namely nitric oxide (NO), inducible nitric oxide synthase (iNOS) and cyclooxygenase-2 (COX-2). T. albicans oil reduced the production of nitrites, a NO derived sub-product, at non-cytotoxic concentrations of 0.32 and 0.64 μL/mL, by 27 and 41%, respectively. In addition, the iNOS protein levels of essential oil pre-treated cells were reduced by 14%. Overall, the high essential oil yield of T. albicans as well as its bioactive effects at concentrations without cytotoxicity, encourage further studies on the potential pharmacological applications of this species. Furthermore, these results raise awareness for the need to preserve endangered species that may hold relevant medicinal value.
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8
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Maccioni A, Falconieri D, Porcedda S, Piras A, Gonçalves MJ, Alves-Silva JM, Salgueiro L, Maxia A. Antifungal activity and chemical composition of the essential oil from the aerial parts of two new Teucrium capitatum L. chemotypes from Sardinia Island, Italy. Nat Prod Res 2020; 35:6007-6013. [PMID: 32856485 DOI: 10.1080/14786419.2020.1813136] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The chemical composition of two populations of Teucrium capitatum L. one from the coastline and the other one from the mountainous area of Sardinia (Italy) was assessed. Two chemotypes were identified: limonene/α-pinene/(E)-nerolidol chemotype predominant in the coastline, and limonene/α-pinene/α-trans-bergamotene/humulene epoxide II chemotype common in plants growing in the mountainous area. In addition, our results showed that the sample growing in the coastline had a more promising antifungal activity. Furthermore, this sample was highly effective in inhibiting C. albicans germ tube formation, at doses well below its MIC. Overall, this study shows that the edaphoclimatic characteristics play an important role on the essential oil composition and biological activity of Teucrium capitatum L.
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Affiliation(s)
- Alfredo Maccioni
- Department of Life and Environmental Sciences, Botany section, University of Cagliari, Cagliari, Italy.,Co.S.Me.Se, Consorzio Interuniversitario per lo Studio dei Metaboliti Secondari, Cagliari, Italy
| | - Danilo Falconieri
- Co.S.Me.Se, Consorzio Interuniversitario per lo Studio dei Metaboliti Secondari, Cagliari, Italy.,State Institute of Higher Education "Michele Giua", Cagliari, Italy
| | - Silvia Porcedda
- Department of Chemical and Geological Sciences, University of Cagliari, Cittadella Universitaria, Monserrato, CA, Italy
| | - Alessandra Piras
- Department of Chemical and Geological Sciences, University of Cagliari, Cittadella Universitaria, Monserrato, CA, Italy
| | | | | | - Ligia Salgueiro
- CIEPQPF and Faculty of Pharmacy, University of Coimbra, Coimbra, Portugal
| | - Andrea Maxia
- Department of Life and Environmental Sciences, Botany section, University of Cagliari, Cagliari, Italy.,Co.S.Me.Se, Consorzio Interuniversitario per lo Studio dei Metaboliti Secondari, Cagliari, Italy
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9
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Leigh-de Rapper S, van Vuuren SF. Odoriferous Therapy: A Review Identifying Essential Oils against Pathogens of the Respiratory Tract. Chem Biodivers 2020; 17:e2000062. [PMID: 32207224 DOI: 10.1002/cbdv.202000062] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2020] [Accepted: 03/20/2020] [Indexed: 01/01/2023]
Abstract
This review explores the body of scientific information available on the antimicrobial properties of essential oils against pathogens responsible for respiratory infections and critically compares this to what is recommended in the Layman's aroma-therapeutic literature. Essential oils are predominantly indicated for the treatment of respiratory infections caused by bacteria or viruses (total 79.0 %), the efficacy of which has not been confirmed through clinical trials. When used in combination, they are often blended for presumed holistic synergistic effects. Of the essential oils recommended, all show some degree of antioxidant activity, 50.0 % demonstrate anti-inflammatory effects and 83.3 % of the essential oils showed antihistaminic activity. Of the essential oils reviewed, 43.8 % are considered non-toxic while the remaining essential oils are considered slightly to moderately toxic (43.7 %) or the toxicity is unknown (12.5 %). Recommendations are made for further research into essential oil combinations.
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Affiliation(s)
- Stephanie Leigh-de Rapper
- Department of Pharmacy and Pharmacology, Faculty of Health Sciences, University of the Witwatersrand, 7 York Road, Parktown, 2193, South Africa
| | - Sandy F van Vuuren
- Department of Pharmacy and Pharmacology, Faculty of Health Sciences, University of the Witwatersrand, 7 York Road, Parktown, 2193, South Africa
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10
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Natu KN, Tatke PA. Essential oils – prospective candidates for antifungal treatment? JOURNAL OF ESSENTIAL OIL RESEARCH 2019. [DOI: 10.1080/10412905.2019.1604437] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Kalyani N. Natu
- C. U. Shah College of Pharmacy, S.N.D.T. Women’s University, Mumbai, India
| | - Pratima A. Tatke
- C. U. Shah College of Pharmacy, S.N.D.T. Women’s University, Mumbai, India
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11
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Alves M, Gonçalves MJ, Zuzarte M, Alves-Silva JM, Cavaleiro C, Cruz MT, Salgueiro L. Unveiling the Antifungal Potential of Two Iberian Thyme Essential Oils: Effect on C. albicans Germ Tube and Preformed Biofilms. Front Pharmacol 2019; 10:446. [PMID: 31130859 PMCID: PMC6509473 DOI: 10.3389/fphar.2019.00446] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2018] [Accepted: 04/08/2019] [Indexed: 11/13/2022] Open
Abstract
Fungal infections remain a burden worldwide, thus underpinning the need for effective new therapeutic approaches. In the present study, the antifungal effect of the essential oils of two thyme species, Thymus camphoratus and Thymus carnosus, used in traditional medicine in Portugal, as well as their major compounds was assessed. A special focus was placed on their effect on Candida albicans virulence factors. Also, the safety profile of the essential oils was assessed on keratinocytes. The essential oils were analyzed by gas chromatography (GC) and gas chromatography/mass spectroscopy (GC/MS). The minimal inhibitory and minimal fungicidal concentrations of the essential oils and their main compounds were assessed on reference and clinical strains. Also, their effect on C. albicans germ tube formation, metabolism, and biofilm disruption were considered. T. camphoratus oil was rich in 1,8-cineole and α-pinene whereas T. carnosus oil showed high amounts of borneol and camphene. Regarding the antifungal effect, both oils were more active against Cryptococcus neoformans and dermatophytes and very effective in inhibiting C. albicans germ tube formation, at doses well below their MIC and in a higher extend than the isolated compounds and fluconazole, an antifungal drug widely used in the clinic. The oils also disrupted preformed C. albicans biofilms. Furthermore, no toxicity was observed at pharmacological relevant concentrations towards keratinocytes. Our study validates the traditional uses ascribed to these Iberian species. Furthermore, it brings new insights on the antifungal potential and mechanism of action of these thyme species, thus paving the way for the development of novel effective antifungal drugs.
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Affiliation(s)
- Melissa Alves
- CIEPQPF - Department of Chemical Engineering and Faculty of Pharmacy, University of Coimbra, Coimbra, Portugal
| | - Maria José Gonçalves
- CIEPQPF - Department of Chemical Engineering and Faculty of Pharmacy, University of Coimbra, Coimbra, Portugal
| | - Mónica Zuzarte
- Faculty of Medicine, CNC.IBILI, University of Coimbra, Coimbra, Portugal
| | - Jorge M Alves-Silva
- CIEPQPF - Department of Chemical Engineering and Faculty of Pharmacy, University of Coimbra, Coimbra, Portugal.,Faculty of Medicine, CNC.IBILI, University of Coimbra, Coimbra, Portugal
| | - Carlos Cavaleiro
- CIEPQPF - Department of Chemical Engineering and Faculty of Pharmacy, University of Coimbra, Coimbra, Portugal
| | - Maria Teresa Cruz
- Faculty of Pharmacy, CNC.IBILI, University of Coimbra, Coimbra, Portugal
| | - Lígia Salgueiro
- CIEPQPF - Department of Chemical Engineering and Faculty of Pharmacy, University of Coimbra, Coimbra, Portugal
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12
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Muturi EJ, Doll K, Ramirez JL, Rooney AP. Bioactivity of Wild Carrot (Daucus carota, Apiaceae) Essential Oil Against Mosquito Larvae. JOURNAL OF MEDICAL ENTOMOLOGY 2019; 56:784-789. [PMID: 30566578 DOI: 10.1093/jme/tjy226] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/19/2018] [Indexed: 06/09/2023]
Abstract
Invasive alien plants wreak havoc on native ecosystems and using them as a source of biopesticides could improve their management. We examined the toxicity of essential oil of wild carrot (also known as 'Queen Anne's Lace', Daucus carota Linnaeus), an aggressive invader throughout the United States, against Aedes aegypti L., Culex pipiens L., and Culex restuans Theobald larvae. Comparisons were made between essential oil extracted from umbels of local populations of wild carrot versus a commercial brand. Methyl isoeugenol (60.7%) was by far the most abundant constituent in commercial brand oil, whereas α-pinene (33.0%) and β-pinene (25.8%) were the dominant constituents in essential oil extracted from local wild carrot populations. The commercial brand essential oil was significantly more toxic to Cx. restuans larvae (LC50 = 44.4 ppm) compared with Cx. pipiens (LC50 = 51.0 ppm) and Ae. aegypti (LC50 = 54.5 ppm). Essential oil from local populations of wild carrot was significantly more toxic to both Cx. pipiens (LC50 = 42.9) and Cx. restuans (LC50 = 40.3) larvae compared with Ae. aegypti (LC50 = 64.6 ppm) larvae. Three of the nine tested chemical constituents of wild carrot essential oil (terpinolene, para cymene, and γ-terpinene) were consistently more toxic to larvae of the three mosquito species than the whole essential oil. These findings suggest that exploiting wild carrot essential oil and its chemical constituents as a biopesticide for mosquito control could be used as part of multifaceted approaches for controlling this invasive alien plant species.
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Affiliation(s)
- Ephantus J Muturi
- Crop Bioprotection Research Unit, Agricultural Research Service, U.S. Department of Agriculture, University Street, Peoria, IL
| | - Kenneth Doll
- Bio-Oils Research Unit, U.S. Department of Agriculture, ARS, Peoria, IL
| | - Jose L Ramirez
- Crop Bioprotection Research Unit, Agricultural Research Service, U.S. Department of Agriculture, University Street, Peoria, IL
| | - Alejandro P Rooney
- Crop Bioprotection Research Unit, Agricultural Research Service, U.S. Department of Agriculture, University Street, Peoria, IL
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Kumari P, Mishra R, Arora N, Chatrath A, Gangwar R, Roy P, Prasad R. Antifungal and Anti-Biofilm Activity of Essential Oil Active Components against Cryptococcus neoformans and Cryptococcus laurentii. Front Microbiol 2017; 8:2161. [PMID: 29163441 PMCID: PMC5681911 DOI: 10.3389/fmicb.2017.02161] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2017] [Accepted: 10/20/2017] [Indexed: 12/30/2022] Open
Abstract
Cryptococcosis is an emerging and recalcitrant systemic infection occurring in immunocompromised patients. This invasive fungal infection is difficult to treat due to the ability of Cryptococcus neoformans and Cryptococcus laurentii to form biofilms resistant to standard antifungal treatment. The toxicity concern of these drugs has stimulated the search for natural therapeutic alternatives. Essential oil and their active components (EO-ACs) have shown to possess the variety of biological and pharmacological properties. In the present investigation the effect of six (EO-ACs) sourced from Oregano oil (Carvacrol), Cinnamon oil (Cinnamaldehyde), Lemongrass oil (Citral), Clove oil (Eugenol), Peppermint oil (Menthol) and Thyme oil (thymol) against three infectious forms; planktonic cells, biofilm formation and preformed biofilm of C. neoformans and C. laurentii were evaluated as compared to standard drugs. Data showed that antibiofilm activity of the tested EO-ACs were in the order: thymol>carvacrol>citral>eugenol=cinnamaldehyde>menthol respectively. The three most potent EO-ACs, thymol, carvacrol, and citral showed excellent antibiofilm activity at a much lower concentration against C. laurentii in comparison to C. neoformans indicating the resistant nature of the latter. Effect of the potent EO-ACs on the biofilm morphology was visualized using scanning electron microscopy (SEM) and confocal laser scanning microscopy (CLSM), which revealed the absence of extracellular polymeric matrix (EPM), reduction in cellular density and alteration in the surface morphology of biofilm cells. Further, to realize the efficacy of the EO-ACs in terms of human safety, cytotoxicity assays and co-culture model were evaluated. Thymol and carvacrol as compared to citral were the most efficient in terms of human safety in keratinocyte- Cryptococcus sp. co-culture infection model suggesting that these two can be further exploited as cost-effective and non-toxic anti-cryptococcal drugs.
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Affiliation(s)
- Poonam Kumari
- Molecular Biology and Proteomics Laboratory, Department of Biotechnology, Indian Institute of Technology, Roorkee, India
| | - Rutusmita Mishra
- Molecular Endocrinology Laboratory, Department of Biotechnology, Indian Institute of Technology, Roorkee, India
| | - Neha Arora
- Molecular Microbiology Laboratory, Department of Biotechnology, Indian Institute of Technology, Roorkee, India
| | - Apurva Chatrath
- Molecular Biology and Proteomics Laboratory, Department of Biotechnology, Indian Institute of Technology, Roorkee, India
| | - Rashmi Gangwar
- Molecular Biology and Proteomics Laboratory, Department of Biotechnology, Indian Institute of Technology, Roorkee, India
| | - Partha Roy
- Molecular Endocrinology Laboratory, Department of Biotechnology, Indian Institute of Technology, Roorkee, India
| | - Ramasare Prasad
- Molecular Biology and Proteomics Laboratory, Department of Biotechnology, Indian Institute of Technology, Roorkee, India
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Manoharan RK, Lee JH, Kim YG, Kim SI, Lee J. Inhibitory effects of the essential oils α-longipinene and linalool on biofilm formation and hyphal growth of Candida albicans. BIOFOULING 2017; 33:143-155. [PMID: 28155334 DOI: 10.1080/08927014.2017.1280731] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/12/2016] [Accepted: 01/03/2017] [Indexed: 05/24/2023]
Abstract
Candida albicans is one of the most common fungal pathogens, and causes systemic and invasive infections in humans. C. albicans biofilms are composed of yeast and hyphal and pseudohyphal elements, and the transition of yeast to the hyphal stage could be a virulence factor. In this study, diverse essential oils were initially investigated for anti-biofilm activity against C. albicans strains, and cascarilla bark oil and helichrysum oil and their components α-longipinene (a major constituent of both) and linalool were found to markedly inhibit biofilm formation without affecting planktonic cell growth. Moreover, α-longipinene and linalool were found to synergistically reduce biofilm formation. Notably, treatments with cascarilla bark oil, helichrysum oil, α-longipinene, or linalool clearly inhibited hyphal formation, and this appeared to be largely responsible for their anti-biofilm effect. Furthermore, the two essential oils, α-longipinene and linalool, reduced C. albicans virulence in Caenorhabditis elegans.
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Affiliation(s)
| | - Jin-Hyung Lee
- a School of Chemical Engineering , Yeungnam University , Gyeongsan , Republic of Korea
| | - Yong-Guy Kim
- a School of Chemical Engineering , Yeungnam University , Gyeongsan , Republic of Korea
| | - Soon-Il Kim
- b Nareso Research Center , Suwon , Republic of Korea
| | - Jintae Lee
- a School of Chemical Engineering , Yeungnam University , Gyeongsan , Republic of Korea
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